Booktype 2.1 released

Version 2.1 of the collaborative book-editing platform Booktype has been released. New features include a built-in image editor, a refreshed set of theme and layout options, and the ability to export books to standard XHTML. Also included is a change to the internal commenting system; while earlier releases supported collaborative live chats in a sidebar, they lacked the ability to leave a persistent comment for other users to read later. That feature is now supported.